Crossword Genius

Goon about to get some energy from something sweet (6,4)

Ross

I believe the answer is:

eccles cake

I'm a little stuck... Click here to teach me more about this clue!

'sweet' is the definition.
Both the definition and answer are singular nouns.
Maybe there's a link between them I don't understand?

'goon about to get some energy from something' is the wordplay.
I cannot really understand how this works, but
'about' could be 'ca' (abbreviation for circa) and 'ca' is located in the answer.
'energy' could be 'ke' (K.E. is an example) and 'ke' is found in the answer.
'from' could be 'e' (I've seen this in other clues) and 'e' is found in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for eccles cake that I've seen before include "Currant-filled pastry" , "Lancashire confection" .)

I've seen this clue in The Daily Express.
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